Spin Fluctuations in Sr${}_{1.8}$La${}_{0.2}$RuO${}_4$

Zheng He, Qisi Wang, Yu Feng +12

We use inelastic neutron scattering to study spin fluctuations in Sr${}_{1.8}$La${}_{0.2}$RuO${}_4$, where Lanthanum doping triggers a Lifshitz transition by pushing the van Hove singula…